Machine for distributing particulate material



Sept. 6, i966 G. F. ROONEY, JR 3,270,923

MACHINE FOR DISTRIBUTING PARTICULATE MATERIAL Filed March 19, 1965 2 Sheets-Sheet 1 OOOOOOQQOO :OOOOO 00000 I FIG. 2

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MACHINE FOR DISTRIBUTING PARTICULATE MATERIAL G. F. ROONEY, JR

2 Sheets-Sheet 2 Filed March 19, 1965 FIG.

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INVENTOR. GEORGE E ROONEY JR. MJWM United States Patent 3,270,923 MACHINE FOR DHSTRIBUTKNG PARTECULATE MATERIAL George F. Rooney, .Ir., Winton Engineering, 2353 May St, Cincinnati, Ohio Filed Mar. 19, 1965, Ser. No. 441,080 Claims. (Cl. 222-193) This application relates to a machine for applying a dust or powder onto an article or surface to be coated thereby.

An object of this invention is to provide a machine which automatically deposits a uniform light powder coating on surfaces.

In printing of paper and paper board sheets and the like, it is common to deposit a fine dust or powder on freshly printed sheets to prevent undesired oifset on adjacent sheets.

A further object of this invention is to provide a machine which deposits a powder coating suit-able for freshly printed sheets.

A further object of this invention is to provide a machine for depositing a powder coating in which a powder receptacle is vibrated horizontally and powder is distributed through openings at the bottom thereof and in which needles having stationary supports ergulate the flow of powder through the openings.

A further object of this invention is to provide a machine of this type in which stationary bafiles mounted in a vibrating powder receptacle serve to agitate the powder.

to maintain a uniform flow of the powder to the openings.

A further object of this invention is to provide a device of this type in which a plurality of vents is provided below and adjacent the openings for projecting jets of air or the like horizontally across the powder discharge openings for spreading the discharged powder over the printed sheets.

The above and other objects of this invention will be apparent to those skilled in the art to which this invention pertains from the following detailed description and the drawing, in which:

FIG. 1 is a plan view of a powder depositing machine constructed in accordance with an embodiment of this invention, a cover thereof being in raised position;

FIG. 2 is a view in side elevation of the machine illustrated in FIG. 1, the machine being shown in association with a fragmentary portion of a pile of printed sheets disposed on a sheet support, fragmentary portions of brackets for supporting the machine being shown in association therewith;

FIG. 3 is an enlarged fragmentary plan view showing details of constnuction of a portion of the machine;

FIG. 4 is a view in section taken on the line 4-4 in FIG. 3;

FIG. 5 is a view in section taken on the line 5-5 in FIG. 1, portions being removed for clarity;

FIG. 6 is a fragmentary view in section taken on the line 6--6 in FIG. 2;

FIG. 7 is a view in section taken on the line 77 in FIG. 4;

FIG. 8 is an enlarged fragmentary view in section taken on the line 88 in FIG. 4; and

FIG. 9 is an enlarged view in section taken on the line 9-9 in FIG. 1.

In the following detailed description, and the drawing, like reference characters indicate like parts.

In FIG. 2 is shown a portion 19 of a printing press frame which receives a stack of printed sheets 12. A powder dispensing machine 13 is supported on brackets 14, 16 and 17. The machine straddles the printing press with the machine at a position to overlie the path of printed sheets approaching the stack.

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The machine includes lengthwise frame angles 18 and 19 which are welded to cross frame angles 21 and 22 to form a main framework for the machine. Brackets 24 and 26, attached to the angles 21 and 22, respectively, are attached to the support brackets 14 and 16 to support the main framework. Mounted on the frame angles 18 and 19 are bearing cross bars 27 and 28 attached thereto by bolts 29, as shown in FIGS. 3 and 5. The bearing cross bar 28 has two bearing openings 31 and 32 (FIG. 5) therein which receive bearing rods 33 and 34, respectively. The bearing cross bar 27 is provided with a single bearing opening 36 (FIG. 3) which receives a bearing rod 37. The bearing rods 33, 34 and 37 are attached to opposite end plates 38 (FIG. 3) and 39 (FIG. 5)of an elognated, open-topped box 41. The bearing rods 33, 34 and 37 are all parallel so that the box 41 can move back and forth or reciprocate with respect to the frame angles 18 and 19 and the main framework.

A pivot bearing assembly 42 (FIGS. 2 and 5) is attached to the wall 39, and a connecting rod 43 is pivotally connected to the box 41 at the bearing 42. The connecting rod 43 is driven by a crank shaft 44 (FIGS. 2 and 6) which causes the connecting rod to move back and forth and causes the box to vibrate. A pully 46 (FIG. 2) mounted on the crank shaft 44 is driven by a belt 47. The belt 47, in turn, is driven by a pulley 48 (FIG. 1) driven by a motor 51. The motor 51 is mounted on a plate 52. The plate 52 carries downwardly extending legs 53 (only one of which is shown, FIG. 2) which are pivotally mounted on a frame 54. The frame 54 is supported by a bracket 56. The bracket 56, in turn, is carried by the support bracket 17. The righthand edge of the plate 52 can be swung upwardly or downwardly by means of an adjustment screw 57 which bears on a lug 58 (FIG. 2) carried by the frame 54. Bearings 59 (only one of which is shown) for the crankshaft 44 are also mounted on the frame 54.

As shown most clearly in FIG. 4, the vibrating box 41 is provided with a plurality of openings 60 in a bottom wall 61 thereof. Each of the openings 60 carries an annular fitting 62 having a central neck or orifice 63 (FIG. 8) of reduced diameter and upwardly and downwardly flaring conic portions 64 and 66. Upward or downward adjustment of a valve needle member 67 increases or decreases the rate at which powder particles 68 are delivered through the orifices of the fittings 62. A lower end portion or tip 70 of each valve needle is of inverted cone shape.

As shown in FIG. 4, each valve needle member has a hook-shaped head 69 at an upper end thereof which is received in an opening 71 (FIG. 7) of an adjustment bolt 72. The adjustment bolt 72 has an upper portion threaded in a nut 73 and in a plate member 74. The nut 73 locks the bolt in adjusted position. As shown in FIG. 4, each plate member 74 is carried by a clamping head 76 having a pair of ears 77 and 78 which may be drawn toward each other by a nut 7 9 and bolt 81 extending therethrough to clamp the clamping head on a lengthwise rod 82. Each adjustment bolt 72 can be turned to raise or lower the valve needle member associated therewith with respect to the plate member 74. In addition, the rod 82 can be swung clockwiseor counterclockwise, as shown in FIG. 4, to lower or raise all valve needles in unison. The rod 82 is rotatably mounted in bearings 83 and 84 (FIGS. 1 and 2) attached to the frame angle 18. A crank arm 85 is mounted on the rod 82. A frame member 86 carries an L-shaped head 87 having a flange 88 in which a crank 89 (FIG. 9) is threaded. The crank 89, in turn, carries nuts 9091 and a washer 92 which bears on the crank arm 85 so that rotation of the crank 89 causes turning of the rod 82 (FIGS. 1 and 2) clockwise or counterclockwise, as shown in FIG. 4, to lower or raise the valve needle members in unison. A spring 94 mounted on the crank 89 between washers 95 and 95A thereon takes up backlash between the crank 89 and the crank arm 85. The washer 95A is held by nuts 95B and 95C threaded on the crank 89. The washer 95 bears on the crank arm 85.

As shown in FIGS. 3 and 4, each of the plate members 74 carries a pair of downwardly extending bafile members 96 and 98 which extend downwardly into the open-topped box 41 adjacent to but spaced slightly above the bottom wall 61 thereof. As the box vibrates, the baffle members 96 and 98 serve to stir up and agitate the contents of the box 41 to insure a smooth delivery of powder to the orifices of the fittings 62.

Attached to the frame 19 is an elongated pipe 101 (FIG. 2) having a closed end 102 and an open end 103 to which an air delivery tube 104 is attached. The pipe 101 is carried by brackets 105 (FIG. 4) which are bolted to the frame 19, and the pipe 101 is provided with a plurality of openings 106, one of which is shown in detail in FIG. 4, through which air can be projected horizontally from the pipe 101 and crosswise of the path of de livery of powder through the orifices. Air under pressure is supplied to the tube 104 and the pipe 101 through control valve 107 (FIG. 1, not shown in detail). The valve 107 can be arranged to open when the box 41 is vibrated.

A cover 108 (FIGS. 1 and 2) is provided for the opentopped box 41 which can swing between an upper raised position as shown in full lines in FIG. 4 and a lower closed position as shown in FIG. 4 in dot-dash lines. The cover 103 can be pivotally mounted on the rod 82, as shown most clearly in FIG. 3, or can be supported on separate hinge mountings (not shown) supported on the frame 18. The cover 108 can be provided with openings 109 which overlie the adjustment bolts 72 to permit access to the adjustment bolts for turning same.

The box 41 can be provided with crosswise partitions as indicated in dot-dash lines at 110 in FIG. 1 which can divide the box 41 into a plurality of compartments, and, if desired, only those compartments above the path of sheets are filled with powder.

The powder delivering machine illustrated in the drawings and described above is subject to structural modification without departing from the spirit and scope of the appended claims.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A powder distributing device which comprises a frame, an open-topped box, means on the frame for supporting said box for vibratory movement, there being a plurality of powder-dispensing orifices in a bottom wall of said box, a rod pivotally mounted on said frame adjacent said box, plate means attached to said rod overlying the box, a plurality of valve needles pivotally mounted on said plate means and extending downwardly therefrom, each of said valve needles having an inverted, coneshaped tip extending into one of the orifices, there being a valve needle for each orifice, means for vibrating the box, the valve needles metering the flow of powder through the orifices as the box vibrates, means for swinging the rod to raise and lower the needle valves to vary the rate of flow of powder through the orifices, an air distributing tube attached to the underside of the box, there being horizontally disposed vents in said pipe directed toward the powder discharged from the orifices, and means for projecting jets of air through said vents to spread the powder as the powder is discharged through the orifices.

2. A powder distributing device which comprises a frame, an open-topped box, means on the frame for supporting said box for vibratory movement, there being a plurality of powder-dispensing orifices in a bottom wall of said box, a rod pivotally mounted on said frame adjacent said box, plate means attached to said rod overlying the box, a plurality of valve needles pivotally mounted on said plate means and extending downwardly therefrom, each of said valve needles having an inverted, cone-shaped tip extending into one of the orifices, there being a valve needle for each orifice, means for vibrating the box, stationary bafiles mounted on the plate means and extenddin g downwardly therefrom into the interior of the box for agitating the contents of the box as the box is vibrated, means for swinging the rod to raise and lower the needle valves to vary the rate of flow of powder through the orifices, an air distributing tube attached to the underside of the box, there being horizontally disposed vents in said pipe directed toward the powder discharged from the orifices, and means for projecting jets of air through said vents to spread the powder as the powder is discharged through the orifices.

3. A powder distributing device which comprises a frame, an open-topped box, means on the frame for supporting said box for vibratory movement, there being a plurality of powder-dispensing orifices in a bottom wall of said box, plate means mounted on the frame overlying the box, a plurality of valve needles pivotally mounted on said plate means and extending downwardly therefrom into the orifices, there being a valve needle for each orifice, and means for vibrating the box, the valve needles metering the flow of powder through the orifices as the box vibrates.

4. A powder distributing device which comprises a frame, an open-topped box, means on the frame for supporting said box for vibratory movement, there being a plurality of powder-dispensing orifices in a bottom wall of said box, plate means mounted on the frame overlying the box, a plurality of valve needles pivotally mounted on said plate means and extending downwardly therefrom into the orifices, there being avalve needle for each orifice, means for vibrating the box, the valve needles metering the flow of powder through the orifices as the box vibrates, an air distributing tube attached to the underside of the box, there being horizontally disposed vents in said pipe directed toward the powder discharge, and means for projecting jets of air through said vents to spread the powder as the powder is discharged through the orifices.

5. A powder distributing device which comprises a frame, an open-topped box, means on the frame for supporting said box for vibratory movement, there being a plurality of powder-dispensing orifices in a bottom wall of said box, a rod pivotally mounted on said frame adjacent said box, plate means attached to said rod overlying the box, a plurality of upright needle carriers in threaded engagement with said plate means, a plurality of valve needles pivotally mounted on said needle carriers and extending downwardly therefrom into the orifices, there being a needle carrier and valve needle for each orifice, means for vibrating the box, the valve needles metering the flow of powder through the orifices as the box vibrates, means for swinging the rod to raise and lower the needle valves in unison to vary the rate of flow of powder, each valve carrier being turnable to vary the rate of fiow around the valve needle associated therewith, an air distributing tube attached to the underside of the box, there being horizontally disposed vents in said pipe di rected toward the powder discharge, and means for projecting jets of air through said vents to spread the powder as the powder is discharged through the orifices.

References Cited by the Examiner UNITED STATES PATENTS 1,231,761 7/1917 Lofstrom 222-1963 2,187,376 1/1940 Guibert 2221 93 2,902,189 9/1959 Buhrer 222l99 ROBERT B. REEVES, Primary Examiner.

S. TOLLBERG, Assistant Examiner. 

3. A POWER DISTRIBUTING DEVICE WHICH COMPRISES A FRAME, AN OPEN-TOPPED BOX, MEANS ON THE FRAME FOR SUPPORTING SAID BOX FOR VIBRATORY MOVEMENT, THERE BEING A PLURALITY OF POWDER-DISPENSING ORIFICES IN A BOTTOM WALL OF SAID BOX, PLATE MEANS MOUNTED ON THE FRAME OVERLYING THE BOX, A PLURALITY OF VALVE NEEDLES PIVOTALLY MOUNTED ON SAID PLATE MEANS AND EXTENDING DOWNWARDLY THEREFROM INTO THE ORIFICES, THERE BEING A VALVE NEEDLE FOR EACH ORIFICE, AND MEANS FOR VIBRATING THE BOX, THE VALVE NEEDLES METERING THE FLOW OF POWDER THROUGH THE ORIFICES AS THE BOX VIBRATES. 